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CPC Subgroup
E02D 19/20

by displacing the water, e.g. by compressed air

Full Title

Keeping dry foundation sites or other areas in the ground (sheet piles or bulkheads E02D5/02) > Restraining of underground water > by damming or interrupting the passage of underground water > by displacing the water, e.g. by compressed air

Filing statistics

CPC E02D 19/20 belongs to the parent subclass E02D, which recorded 112,888 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,838 in 2013 to 13,673 in 2023 (+256%), peaking at 14,689 applications in 2021. The most active applicants in class E02 are KOMATSU (3,939 applications), CATERPILLAR (3,490 applications) and HITACHI CONSTRUCTION MACHINERY COMPANY (2,553 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class E02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. KOMATSU JP 3,939
  2. CATERPILLAR US 3,490
  3. HITACHI CONSTRUCTION MACHINERY COMPANY JP 2,553
  4. KOMATSU 1,789
  5. JOHN DEERE US 1,277
  6. HITACHI CONSTRUCTION MACHINERY COMPANY 1,102
  7. KOBELCO CONSTRUCTION MACHINERY COMPANY JP 1,014
  8. HOHAI UNIVERSITY 975
  9. CHINA MCC17 GROUP COMPANY 810
  10. VOLVO CONSTRUCTION EQUIPMENT SE 787